iPhone 3G

Capacity: 8 GB or 16 GB
Network: AT & T (3G) only only
Applications: you can download from the iTunes App Store
Location: GPSSpecification iPhone 3G

iPhone

Screen: 3.5 inches
Camera: 2 MP, only the photo / front camera is missing
Capacity: 4 GB or 8 GB (16 GB appeared in February of 2008)
With a capacity of 128 MB
Network: only AT & T (2G)
Applications: only those already installed by the manufacturerSpecification iPhone